An extended two‐dimensional copper–molybdate compound with mixed dicarboxyl and organodiamine ligands

The title complex, poly[di‐μ₃‐oxo‐hepta‐μ₂‐oxo‐tetra­oxo­bis(1,10‐phenanthroline)‐μ₄‐terephthalato‐dicopper(II)­tetra­molybdate(VI)], [Cu₂Mo₄(C₈H₄O₄)O₁₃(C₁₂H₈N₂)₂], represents a novel two‐dimensional copper–molybdate compound with mixed ligands. Tetra­nuclear molybdenum oxide clusters are joined through corner‐sharing into a ribbon‐like chain, with [Cu(phen)]²⁺ (phen is 1,10‐phenanthroline) complexes grafted onto either side. The terephthalate ligand lies about an inversion centre and links these chains to form a layer via Cu—O and Mo—O bonds. Face‐to‐face π–π stacking inter­actions between adjacent phen ligands stabilize the structure.